Totally possible, but with the debate already I could see him leaving it alone if he likes it being blue, since some think it is... I don't think he intended that though, and he cares so little about fan's nostalgia anyway, I doubt he'd tinker with something like that.

Now, changing it to black, since "Han always wears black"... and just totally f'ing with everyone for his own jollies, now that I could see.